We usually work from Jpegs, emailed to us and work from there. We pour slip, (liquid clay) into plain tile molds. These dry for a few days, cleaned and then a protrait starts. From a sketch on the tile, I paint with simple underglazes, these are simple earth and mineral dyes mixed with water. A six inch head study usually takes about two or three hours to work up. It now dries for a day to two and then is first fired to cone 03 to a hard bisque state. This is then washed, dryed and glazed with a clear gloss or satin glaze and fired to cone 05. This makes it hard, glossy and very durable, the image is fixed forever. No two tiles really ever come out the same.